Section III. Installation

19

 

 

 

 

ELECTRICAL CONNECTIONS

 

 

 

 

 

 

 

 

Electrical Rating 60 Hz

120 / 240 Volts AC, single phase

CAUTION

This heater is designed to operate at 120 or 240 VAC. It is not recommended to be connected to OR operate on a 208 VAC.

NOTE

•The MiniMax NT heater is prewired for 240-volt AC connection using the “RED” connector and the “BEIGE” common connector; see Figure 16 below. For 120-volt AC supply, remove the “BEIGE” common connector and plug it into the “BLUE” common connector.

•When connecting the power supply to the “Line Terminal Block” inside the junction box, follow the polarity as shown below. Connecting to 120 VAC, make sure that you connect the wire to the terminal (L), the neutral wire is connected to the neutral terminal (N) and the ground is connected to the ground terminal (GND); see below, Figure 17.

•If any of the original wiring supplied with this heater must be replaced, installer must supply (No. 18 AWG, 600V, 105° C. U.L. approved AWM low energy stranded) copper wire or it’s equivalent. Thermal fuse wiring must be replaced with 18 AWG, 600V, 150° C. temp. rating.

CAUTION

The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation Codes. If an external electrical source is utilized, the heater, when installed, must be electrically grounded and bonded in accordance with local codes or, in the absence of local codes, in the USA, with the National Electrical Code, ANSI/NFPA 7; in Canada, with Canadian Electric Code, CSA C22.1.

Always use crimp type connectors when connecting two wires.

 

TRANSFORMER

 

 

 

 

CONNECTOR

 

BLUE

 

 

 

 

120V CONNECTOR

 

 

 

 

 

 

 

 

BEIGE

 

 

 

 

 

 

 

 

COMMON CONNECTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINAL BLOCK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FOR AC INPUT

 

You need to open the right

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120 / 240 VOLT SINGLE

 

 

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PHASE "See Below"

 

door then remove the

 

 

240V CONNECTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 16.

 

 

 

 

 

control panel cover for

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

servicing the Line Terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LINE TERMINAL BLOCK

 

 

 

 

 

Block as shown in Figures

 

 

 

 

 

 

 

 

 

16 & 17, (see item 40 in the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

exploded view on page 33).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GROUND

 

 

 

 

 

GREEN WIRE

 

 

 

 

 

 

 

 

 

 

 

 

 

CONNECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INTERNAL FACTORY WIRES

WHITE WIRE

BLACK WIRE

N

L

NEUTRAL / WHITE 120 VAC LINE #1 FOR 240 VAC

HOT / BLACK 120 VAC

LINE #2 FOR 240 VAC

Figure 17.

Rev. E 4-15-05

P/N 472235

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Image 19
Pentair NT Series installation manual Electrical Connections, Electrical Rating 60 Hz 120 / 240 Volts AC, single phase
Page 18 Page 20

NT Series specifications

Pentair is a renowned name in the realm of water filtration and fluid management solutions, and the NT Series stands out as a key player in their extensive product lineup. Engineered for optimal performance and reliability, the NT Series showcases innovative features and technologies that cater to various water treatment needs.

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